How do we describe phase changes? What are the phases of matter? The four phases of matter include: oSolids oLiquids oGases oPlasmas A phase change involves a change in the physical state of a substance from one phase to another such as: or vice versa oSolid- liquid oLiquid- gas oSolid - gas Solids The physical state of matter characterized by particles that appear to vibrate about fixed points. Particles of a solid (crystalline) are arranged …showed first 75 words of 1158 total…

…showed last 75 words of 1158 total…energy at the expense of the other oThe average kinetic energy of all the molecules is proportional to the absolute temperature- in Kelvin degrees oAll of these assumptions in KMT of gases explain and predict the behavior and properties of gases oGases are fluids- they flow just as liquids do. Since the particles of a gas have no attractive forces between them to a particular configuration, gas particles are free to flow wherever the want